Brick-drier.



Patented mar. 25,1902. P. B. FlsKE.

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(Application led Jan. 23, 1901.)

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nrnnr SPECIFICATION forming* part Of` Letters Patent No. 696,026, dated. Marchi 25, 1902. Application tiled January 23,1901. Serial No. 44,379. (No model.)

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Be it known that I, JONATHAN P. B. Fiske, a citizen of the United States, residing at Newton, county of Middlesex, State of Massachusetts,have invented an Improvement in Brick- Driers, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

My invention is an improved brick-drier for facilitating the convenience and economy of handling and drying green bricks, and has for its primary object the application to a drier of the continuous-kiln principle in such a way as to get the most work from the heat.

I have herein shown my'invention as applied to the overhead system of handling bricks, as I believe this method is the most economical.

I will fully describe my invention and set forth the operation and various advantages thereof in the course ofthe following detailed description, reference being had to the accompanying drawings, in which I have illustrated a preferred embodiment of the invention.

In the drawings, Figure l is a diagrammatic top plan view of a drying-kiln built according to my invention. Fig. 2 is a trans- Verse sectional view thereof, taken on the line 2 2, Fig. 1. Fig. 3 is a detail in longitudinal section taken on the line 3 3, Fig. 2; and Fig. i is a vertical cross-sectional View taken on the line et 4, Fig. 1.

Referring to Fig. l, it will be seen that I have provided a series of drying-chambers ct, there being herein shown twelve thereof for convenience of illustration, numbered from l to 12, and at the oppositen ends of these chambers and constituting the sides of the drier are flue-Walls a CL2, containing ilues or heat-passages c c3, the former'leading from a furnace or other suitable source of heat a3 and the latter leading, preferably, to a stack or chimney a4. The chambers d may be of any size and shape to suit the particular system of receiving and delivering the bricks, said chambers being herein shown as provided with a bottom a5, onto which a stack or pile of green bricks b may be lowered, and a series of ledges a6, onto which grills or supportingplatforms a7 may be lowered, together with successive stacks of bricks b h2, the whole being closed in by a removable cover d8. The bottom a5 is solid, excepting at its opposite sides, where it has openings a9 d10 for the free inlet and outlet, respectively, of the hot air. The wall a has a flue or heat-supply passage c, which communicates, through openings c', with, preferably, inclined branch passages or subways. c2, extending under the'respective drying-chambers a., and the Wall a2 has a hotair-exhaust passage c3, into which the hot air from the cham bers flows through a preferablyinclined passage or subway c4 from each chamber opening into the chamber c3 at c5. The `openings c' c5 are arranged to be closed by doors c6 and c7, respectively. Communication between the successive chambers may be had in any convenient manner, openings cl2 being shown for the purpose extending through the walls adjacent the bottoms thereof, which may be closed inany convenient manner, as by dampers als. Above the heatpassages, and preferably in each Wall, are return-passages o8, which communicate with the end chambers of the drier, as indicated at o9, dampers 010 being used to control the connection.

` It will be understood that very many changes and modifications in details of arrangement and construction may be made While still embodying my invention in its broader features.

The operation of my improved`drying-kiln is as follows: We will suppose that the first chamber has been dried and that the charnbers 2 to 6 are being dried. The roof is taken off from the chamber l by acrane or other suitable lifting device engaging lifting-eyes a for the purpose of removing the dried bricks therefrom. -The door c6 is opened from the' passage c into the subway of chamber 2, the other doors being closed. The dampers alg of chamber 2 are closed to prevent aback draft into chamber l, thereby causing all the heated air from the passage c to iiow through the single opening c into the inclined subway c2 and through the openings u. up into chamber 2, thence through the mass of bricks therein down through the exits d10 in the bottom of said chamber, thence through the openings am in the wall to the inclined subway of chamber 3, thence through the bricks IOS in chamber 3 and out, asin the case of chamber 2, and so on through the successive chambers until the hot air reaches chamber 6. The openings 6012 between the subways of chambers G and 7 are closed and' the door cT of the exit-subway c4 of said chamber isopen, thereby permitting the hot air to flow from chamber 6 down the inclined exit subway or passage c4 into the flue c3 under the action of the stack or other draft-producer a4. In other words, the circulation is from the furnace a3 through the passage c and opening c', subway or passage c2 into chamber 2, and thence through the successive chambers to that chamber which has open communication with the passage c3, and thence ont to the stack. The next chamber 7 having been filled with bricks and the chamber 2 sufficiently dried, the holes cl2 between chambers 2 and 3 are closed and between chambers 6 and 7 are opened, and chamber 7 is thrown into communication with the stack-passage c3, whereupon the process already described for chambers 2 and 6 is continued for chambers 3 to 7, and so on with the successive chambers, one chamber being added and one dropped each time until chamber l2 is reached. When this chamber is reached and chamber l has been filled with green bricks, the holes c9 from chambers l2 and l into the passages o8 are opened, so that the heated air iows from the furnace d3 through the supply-passage c to, let us say, chamber 9, and thence into chambers lO, 1l, and 12, and out into one .or both of the return-passages c8 and into chamber l, from whence it iiows down theinclined subway or passage c4 beneath said chamberrl and into.

the stack-flue or draft-passage c3, as before. Thus it will be seen that a continuous rotation of removing the dried bricks, drying filled chambers, and filling empty chambers takes place without interruption of the heat circulation or waste and that at the same time the structure is extremely compact and well adapted to retain and utilize all the heat to the best advantage.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

l. An apparatus of the kind described, comprising a series of chambers, means for closing and opening communication between them, a heat-supply passage, means for opening communication from said passage with any of said chambers, as may be desired, branch passages, extending from said passage, underneath the bottoms of said chambers, said chambers having means permitting heat from said branch passages to pass freely thereinto, and means for creating a draft for causing the heat received from said passage to circulate properly through said chambers.

2. An apparatus ofthe kind described, comprising a series of chambers, means for closing and opening communication between them, aheat-supply passage, means for opening communication from said passage with any of said chambers, as may be desired, branch passages, extending from said passages, underneath the bottoms of said chambers, said chambers having means permitting heat from said branch passages to pass freely thereinto, and means for creating a draft for causing the heat received from said passage to circulate properly through said chambers, a return-passage for conducting the heat from the end of said series to the beginning thereof, and means for throwing said return-passage into or out of the circuit including said draft-creating means.

3. An apparatus of the kind described, coinprising a series of chambers, means for closing and opening communication between them, a heat-supply passage, means for opening communication from said passage with any of said chambers, as may be desired, branch passages,extendin g from said passage, underneath the bottoms of said chambers,said chambers having means perlnitting heat from said branch passages to pass freely thereinto,a heat-exhaust passage, means for creating a draft for causing the heat received from said supply-passage to circulate properly,a returnpassage for conducting the heat from the end of said series to the beginning thereof, and means for throwing said return-passage into or out of the circuit including said draftcreating means.

4C. An apparatus of the kind described,comprising a series of communicating chambers arranged side by side and having heat-inlet passages extending beneath the bottoms of the respective chambers, and outlet-passages also extending beneath the said bottoms, heatsupplying means communicating with said inlet-passages, draft-creating means communicating with said outlet-passages, and means for bringing into action said heat-supply passage and draft-passage for any set of said chambers desired.

5. A kiln comprising a plurality of chambers arranged side by side in a longitudinal series, means for supplying and removing heat from any set of the chambers, as may be desired, and opposite return-fines extending transversely across the ends of the chambers and connecting the first and last chambers of the series at both ends and opposite sides of the kiln, and means for introducing said return-fines into the heat-circulation system when it is desired to include the first and last chambers in the set of chambers being operated. a

6. A kiln comprising a plurality of chambers arranged in a longitudinal series and having heat-passages extending along the ends of said chambers at the sides ofthe kiln, branch passages extending from said firstmentioned passages beneath each chamber, said branch passages having their bottoms inclined from their respective heat-passagesk and extending past each other to the opposite end of the chamber.

7. A kiln comprising a plurality of cham- IOO IIO

bers arranged side by side, audhzwinga heati name to this specification in the presence of circulation system for operating several chamtwo subscribing witnesses. bers simultaneously, each chamber having' its T Walls provided with ledges for removably re- JOL ATHAN P' 1)' FISKE' 3 ceivingsuceessive series of superposed stacks Witnesses:

of bricks and their supporting-platforms. GEO. H. MAXWELL, In testimony whereof I have signed my GEO. W. GREGORY. 

